Chain of Command

"Chain of Command" is an intimate portrait of what has been dubbed "the war of this generation" -- the U.S. military's mission to combat violent extremism around the world -- and the men and women devoting their lives to it. Filmed over 18 months, the eight-part documentary allows viewers unprecedented access inside the Pentagon to see how decisions made there have a direct impact on service members fighting on the front lines to protect Americans and U.S. allies from radicalized extremists. The series also includes a rare on-camera sit-down with Gen. Joseph Dunford Jr., the chairman of the Joint Chiefs of Staff.

Chris Evans

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U.S. Marines prepare to return home from Afghanistan, but they are still surrounded by reminders of the dangers haunting the country.

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The war against violent extremism on an aircraft carrier, and in Afghanistan and Africa.

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The United States continues its global war against extremism in Afghanistan, Africa and Panama.

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In Afghanistan, the Marines work with local fighters as they battle the Taliban.

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As the battle of Mosul nears an end, fighting extremism in Trinidad and Tobago begins.

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The war on extremism continues across the globe -- from Iraq to Colombia to Afghanistan.

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As the war on extremism continues globally, the battle for western Mosul begins in Iraq.

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An unprecedented look deep inside the war against violent extremism.

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